Prebiotic/Probiotic/Postbiotic

Aspergillus/Rice Ferment Filtrate

INCI: ASPERGILLUS/RICE FERMENT FILTRATE

Reviewed by Daisy · Last updated 2 Jun 2026

A fermented rice extract that conditions and supports skin's natural moisture balance

Best For Skin Types

All, Dry, Mature

Addresses

Dryness, Hydration, Dull skin

Usage Frequency

Daily

What Is Aspergillus/Rice Ferment Filtrate?

Aspergillus/Rice Ferment Filtrate is produced by fermenting rice using Aspergillus, a fungus commonly used in food and cosmetic fermentation. The fermentation process breaks down rice components into smaller molecules that can be absorbed more readily by the skin.

In skincare formulations, this ingredient functions primarily as a skin conditioner, helping to improve the texture and feel of the skin whilst supporting its hydration status. It is used across a range of product types, from serums to moisturisers.

How It Works

The fermentation process converts rice carbohydrates, proteins and other compounds into smaller, more bioavailable molecules such as amino acids, peptides and polysaccharides. These smaller components can penetrate the outer layers of the skin more effectively than whole rice extract.

Once absorbed, these molecules help to attract and bind water within the skin, improving hydration. They may also stimulate the skin's natural moisturising factor (NMF) production and provide antioxidant support to help protect against environmental stressors.

Clinical Evidence & References

Published research specifically examining Aspergillus/Rice Ferment Filtrate in skincare is limited. Most claims derive from in vitro studies and historical use in traditional skincare and fermented food applications, where fermented rice is valued for its conditioning properties.

Fermented botanical extracts more broadly have shown promise in supporting skin hydration and antioxidant defence in some studies, though evidence for this particular ingredient in human subjects remains modest. More robust clinical trials would strengthen understanding of its efficacy in cosmetic formulations.

How to Use

This ingredient is stable across most skincare formulations and can be used daily as part of both morning and evening routines. It integrates well in layered routines and does not typically require special timing. If using multiple hydrating ingredients, monitor your skin's response to ensure you are not over-hydrating, which can occasionally trigger sensitivity in prone individuals.

Safety & Precautions

Generally well-tolerated and considered safe for cosmetic use. Fermentation may reduce the allergenic potential of rice proteins, though those with known rice sensitivity should patch-test first.

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